Brewery Upgrade!!!

I made a big change to my brew rig!  The stainless tank in the center is a SS Brewtech  20 gallon infusion mash tun!  The highlights are that it is fully insulated (including the lid), has cupped bottom with a center bottom drain, a nanometer (which I will explain below) and a re-circulation port which is unfortunately on the wrong side for my system.    I also fine tuned my pump and hose layout to make the whole thing easier to manage.

Why the new mash tun?

• The volume of the 10 gallon cooler was not big enough to make 10 gallon batches of higher gravity beers.
• Although I have been assured that using a plastic mash tun is safe, I still feel better having a fully stainless system.
• It will lend itself to doing more no-sparge brewing due to it's volume.
• The bottom drain design eliminates wort loss below the false bottom.
• The nanometer is a great tool to help prevent a stuck sparge or re-circulation.

 What is a nanometer and how does it work?  The nanometer is basically two sight glasses mounted side by side.  One is connected above the false bottom and the other one is below.  As you are recirculating or sparging, the levels in these tubes should remain the same unless a suction is produced below the false bottom which will cause the level in the bottom mounted tube to get lower and lower.  Suction in the bottom indicates that not enough liquid is able to make it through the grain bed and that the re-circulation/sparge pump should be slowed.  Without this indicator the grain bed can be allowed to completely lock up forcing you to stir the the grain and losing any bed filter that had built up.  It is especially bad if you are sparging, because you must stir, go back to re-circulation/vorlauf, then back to sparging again...

The only two drawbacks to this mash tun for me are emptying/cleaning and the location of the re-circulation port.  For emptying/cleaning, my plan is to clean it in place (CIP) the same way that I clean the other kettles.  I am hoping that I can scoop out all the grain and by swirling rinse water to suspend the remaining grain, then pump it into the sink.  At this point I would just use my DIY CIP head to do the same cleaning I do on the other kettles. (More to come on the DIY CIP head in a later post.)

The other change was to eliminate the elaborate pump priming hardware that I originally installed.  This consisted of a T connector coming out of the pump with one side going to the output destination and the other side to a valve and hose allowing me to eliminate back pressure when priming.  Although this worked well, it caused big headaches for cleaning.  As the PBW circulated through the pump and hose half the output T and the valve were not being exposed, which caused sediment to build up.  My solution was simply to eliminate the T and disconnect the output hose from it's destination connector when priming which eliminates any back pressure.  I tested this on my last brew and it worked very well and made cleaning much easier.

Rusty Irish Red 1/31/15

The first batch of Rusty Irish Red is now in the Fermenter.  I had a few problems with the recirculation sticking but once I slowed it to a trickle it seemed to be fine.  I have never had to run it that slow.  Even with the problems, the mash efficiency was still a little over 95%.  I am back to sparging with this batch and it seems to have worked well.  I detected no off flavors with the wort.  One thing I need to add to my procedure is a whirlpool after chilling the wort.  The whirlpool during chilling does not seem to be separating much of the hot/cold break.

Update *** 2/9/16

The OG came out a bit higher than I was shooting for at 1.050 which should push the ABV to a little over 5%.  After 2 days I was kind of freaking out that the air lock was not bubbling so I attempted to tighten the lid a bit.  I was easily able to screw and unscrew it and it was not making a squeak from the silicone gasket.  That is when I discovered that the gasket had fallen into the fermenter!  I fortunately had a spare gasket that I sanitized and put in place.  Needless to say the air lock went totally crazy!  After a full 5 days I emptied the yeast catcher and there was enough yeast in the cone to fill it again.  I plan to dump again at the 10 day mark and count that as the beginning of secondary.  I plan to secondary for about 2 weeks before kegging.

Infection!!! (Maybe....)

The 5 Kilowatt Blond is infected!  I think I have narrowed the problem down to a problem with the keg.  The previous beer that I had in that keg (Rusty Irish Red) was infected as well.  I am not sure what is going on because before I used this keg for the Blonde I totally disassembled it, cleaned all the parts with hot PBW, rinsed, re assembled, rinsed again, filled it with StarSan, let it stand for 2 hours,  forced out all the StarSan with CO2, and left the thing pressurized until I was ready to fill it.  All the seals on this particular keg were replaced in October and each time I clean it I pay special attention to them to make sure they get cleaned and soaked for a long time in StarSan.  The only thing I can think of is if the dip tube has an infection inside that I have not gotten cleaned out.  I am not even sure what kind of tool you would use.  I guess a very small bottle brush...

*** Update ***

Someone on HomeBrewTalk.com suggested using a hydration line cleaning brush.  I found one on amazon.  Looks like that might just fix my problem!

*** Update  (2/9/16)

Ok.... after being in the keg for another week and a half I am wondering if the off taste is actually yeast and sediment.  The beer is now crystal clear and although the citris taste from the Citra hops is very pronounced on the back end it no longer tastes sour to me....  I am going to have some others taste it to see if I am crazy.

 *** Update (2/15/16)

It is clear at this point that there is no infection and that adding .75 oz of Citra in the last 10 minutes of the boil had a BIG effect on the beer.  The flavor no longer has a sour taste but a slightly tart citrus flavor in the finish.  The beer is now crystal clear has a very strong long lasting head and the nose is definitely more pronounced.